A population-coding model of attention's influence on contrast response: Estimating neural effects from psychophysical data.
Human psychophysics and monkey physiology studies have shown that attention modulates early vision - contrast sensitivity and processing. But how can we bridge the effects of attention on perceptual performance to their neural underpinnings? Here we implement a population-coding model that estimates attentional effects on population contrast response given psychophysical data. Model results show that whereas endogenous (sustained, voluntary) attention changes population contrast-response via contrast gain, exogenous (transient, involuntary) attention changes population contrast-response via response gain.
Pestilli
Franco
F
Department of Neuroscience, Columbia University, New York, NY 10032, USA. franco.pestilli@columbia.edu
Ling
Sam
S
Carrasco
Marisa
M
D001288:Attention / Q000502:physiology*; D015350:Contrast Sensitivity / Q000502:physiology*; D003463:Cues; D004192:Discrimination, Psychological; D006801:Humans; D008959:Models, Neurological; D008960:Models, Psychological; D009949:Orientation; D010775:Photic Stimulation / Q000379:methods; D011594:Psychometrics; D011601:Psychophysics